Improvement in wheels for vehicles



C.' V. PETTIBONE. WHEEL.

No.l 109,447. Patented Novi. 22, 1870.

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0.- VA'LLETTE PETTIBONE, 0F FOND DU LAG, WISCONSIN.

Letters Patent, No. 109,447, dated November 22, 1870.

IMPROVEMENT IN WHEELS FORVEHICLES.

The Schedule referred to in these Letters Patent; Vand making part of the same.

To all whom. it may concern:

Be it known that I, G. VALLn'r'rn ln'rrruoxn, of Fond du'Lac,.in the county of Fond du Lac and State of VViscousiu, have invented new and useful Improvements in Vehicle Wheels; and I do hereby declare that the following is a full, clea1', aud exact description thereof', which will enable others skilled in the art to make and use the same, reference heilig had to the accompanying drawing forming part of this specification.

My invention has Aforrits object to provide improved means to facilitate thc rolling of carriage and wagonwheels over railroad-rails or'other obstructions, in diagonal lines, and more especially1 to facilitate turningV away from the tracks when running upon them. To this end' Myiuvention consists in providing an ordinary carriage-wheel with a supplemental rim,notchcd upon opposite edges, and adapted to be fitted over the ordinary tire."

I am aware that pins or 'projections have been formed upon the fellies ot' wheels for this purpose, and l am also aware that the ordinary .tireof a wheel has been notched upon opposite sides, correspomling to 1 1otch'es formed in thesides ofthe fellies. rthese methods vot' accomplishing t-nc desired object form 11o part of my invention, and are objectionable for the followingr reasons:

The pins or projections upon the sides oi' i'ellies heingremovcd a short distance vfrom inch other, are independent, and as they must he made sniall in size in order not to destroythe symmetry of the wheel are liable to become broken, and therefore destroy the cicieneyot' the wheel.

Whe-n the tires audf'ellicsrare both notched, it is evident that the wheel is materially weakened and unable to sustain the load i'or which it was originally constructed.

rlhe fellies and tire .are made to resists a predetermined pressure or weight, and it' they are eut away toaccomplish a result not 'contemplated when first made, the` wheel must .necessarily be weakened and injured.` O11 the other hand, to compensate for the decrease in luaterial-'the fellies and tire lnust be made of unusual size, andthercfore become clumsy and unwieldly.

By myimprovemcut, these objections are overcome, as I propose to employ an additional baud, notched upon opposite edges, to be placed over the. ordinary tire, thereby-strengthening the latter to such an extent that'the fellies and tire may be reduced considerably iugsize.

Another advantage arising from my improvement consists in the capacity ofthe supplemental rim for removal from the tire7 when it becomes worn, that its place may be supplied with a new onc,witl1out in the least injuring or impairiug the efcieucy ofthe tire :1nd t'ellies. v

`Iuasmnch as the supplemental rim can be constructed at much less expense than an ordinary wheel tire, this adaptation for removal becomes of much irnportance in the cost of constructing carriage-wheel s.

Figure l is a side elevation of a wheet provided with my improvement' Figure 2 is a front elevation of the same; and

Figures 3 and 4 represent cross-sections of the supplemental rim applied to the tire.

Similar letters ot` reference indicate correspomliugy parts.

l'n the accompanying drawing- B is the ordinary tire of a carriage or wagon-wheel applied to the feliies iu the usual manner.

A is the supplemental metal'rim, provided. upon opposite edges with notches a., as shown, and shrunk upon or otherwise secured to the smooth tire B.

It' desired the notches a need not bepmadc entirely through the supplemental rim A, hut may form iudeu'tations upon its outer edges, and may'be greater or lesser iu size, as preferred.

The rim should be so attached .to the tire that it can be removed with facility when worn out, and may be composed or' wrought-iron, or made of steel, and hardened.

When wheels of this construction run diagonally against railrozul-rails, the notches (t will engage the corner of the rails, and the wheels be rolled over, iustead of slipping along the rails, as they do new ot' the great danger ot' the vehicle and the increase to 'the draft of the same.

specified. p

G. VALLETTE PETTIBONE. Witnesses H. G.W1L1.s, C. J. PnTTmoNn. 

